Robin Gibb performs live during a concert at the Stadtwerkefestival on July 3, 2011 in Potsdam, Germany. (Frank Hoensch/Getty Images)
Robin Gibb arrives at the World Music Awards 2010 in Monaco. (Dave Hogan/Getty Images)
Barry Gibb and Robin Gibb of the Bee Gees attend the 25th Annual Rock And Roll Hall of Fame Induction Ceremony on March 15, 2010 in New York City. (Stephen Lovekin/Getty Images)
Robin Gibb of The Bee Gees performs prior to an exhibition match between Steffi Graf and Gabriela Sabatini at the Max Schmeling Hall, on September 25, 2004 in Berlin, Germany. (Sean Gallup/Getty Images)
Robin and Barry Gibb accept an award from the National Academy of Recording Arts and Sciences at the 45th Annual Grammy Awards in 2003. (KMazur/WireImage)
Robin Gibb waves to fans as he arrives for the Brit Awards 2003 at Earls Court in London. (John Li/Getty Images)
Robin Gibb during 25th Annual Songwriters Hall of Fame Awards Dinner and Ceremony at Sheraton Hotel in New York, 1994. (Jim Smeal/WireImage)
Robin Gibb from The Bee Gees performs live on stage at Ahoy in Rotterdam, Netherlands on 1st July 1991. (Rob Verhorst/Redferns)
Robin Gibb in 1990. (Marty Temme/WireImage)
Robin Gibb and The Bee Gees perform at Riverfest in St. Paul, Minn. in 1989. (Jim Steinfeldt/Michael Ochs Archives/Getty Images)
Robin Gibb performs solo on stage at the Montreux Pop Festival held in Montreux, Switzerland in May 1984. (David Redfern/Redferns)
Robin Gibb of the Bee Gees performs at the Oakland Coliseum on July 11, 1979 in Oakland, Calif. (Ed Perlstein/Redferns/Getty Images)
Barry Gibb, Maurice Gibb and Robin Gibb (L-R) on Sgt. Pepper set in 1978. (Chris Walter/WireImage)
Robin Gibb (L) with Maurice and Barry Gibb in 1979. (NBC/NBCU Photo Bank via Getty Images)
Robin Gibb from The Bee Gees poses at a Press Conference in Copenhagen, Denmark in 1975. (Jan Persson/Redferns)
Robin Gibb, Barry Gibb, Maurice Gibb (L-R) in 1979. (NBC/NBCU Photo Bank via Getty Images)
Robin Gibb on stage with the Bee Gees, Windsor, Berkshire, February 1974. (Michael Putland/Getty Images)
Robin Gibb performing at the London Palladium in 1969. (McCarthy/Getty Images)
Robin Gibb in 1967. (Evening Standard/Getty Images)
Robin Gibb in 1967. (Ian Tyas/Keystone/Getty Images)
Robin Gibb (R) with Barry and Maurice Gibb in 1963. (GAB Archive/Redferns)
